/*******************************************************************************
 * Copyright 2010 Mario Zechner (contact@badlogicgames.com)
 * 
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the
 * License. You may obtain a copy of the License at
 * 
 * http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS"
 * BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language
 * governing permissions and limitations under the License.
 ******************************************************************************/

package com.badlogic.gdx.physics.box2d.joints;

import com.badlogic.gdx.physics.box2d.Joint;
import com.badlogic.gdx.physics.box2d.World;

/**
 * A distance joint constrains two points on two bodies to remain at a fixed distance from each other. You can view this as a
 * massless, rigid rod.
 */
public class DistanceJoint extends Joint {
	public DistanceJoint (World world, long addr) {
		super(world, addr);
	}

	/**
	 * Set/get the natural length. Manipulating the length can lead to non-physical behavior when the frequency is zero.
	 */
	public void setLength (float length) {
		jniSetLength(addr, length);
	}

	private native void jniSetLength (long addr, float length);

	/**
	 * Set/get the natural length. Manipulating the length can lead to non-physical behavior when the frequency is zero.
	 */
	public float getLength () {
		return jniGetLength(addr);
	}

	private native float jniGetLength (long addr);

	/**
	 * Set/get frequency in Hz.
	 */
	public void setFrequency (float hz) {
		jniSetFrequency(addr, hz);
	}

	private native void jniSetFrequency (long addr, float hz);

	/**
	 * Set/get frequency in Hz.
	 */
	public float getFrequency () {
		return jniGetFrequency(addr);
	}

	private native float jniGetFrequency (long addr);

	/**
	 * Set/get damping ratio.
	 */
	public void setDampingRatio (float ratio) {
		jniSetDampingRatio(addr, ratio);
	}

	private native void jniSetDampingRatio (long addr, float ratio);

	/**
	 * Set/get damping ratio.
	 */
	public float getDampingRatio () {
		return jniGetDampingRatio(addr);
	}

	private native float jniGetDampingRatio (long addr);
}
